>> i don't sleep much. >> rose: is it -- what is it? three to five hours? >> i think i average four and a half these days. >> well, that's three to five. how many naps a day? >> um, i don't really take naps. >> rose: so three to five and that's it? >> yup. i can generally function pretty well. >> rose: on four and a half? >> every once in a while i hit a wall where i have to catch up. >> rose: can you really catch up in sleep? >> i think the science tells us you cannot but i keep on telling myself that. >> rose: i was going to correct you, too, being thaushd illusion. >> it's an illusion i keep telling myself about. >> rose: there's also this, we talk about what you're doing today and the technology, there is this peter is a well known libertarian. does he represent a significant part? because i was at a recent conversation and cheryl mentioned that idea of libertarians in silicon valley. is that -- does that represent the political feeling of a significant number of people, do you think, there? and if so, why?